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Chromio-pargasite

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CHA644325

Chromio-pargasite

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Description Tabs

Description
Locality: 
Akaishi Mine, Doi, Shikokuchuo City, Ehime Prefecture, Shikoku Island, Japan
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.4 × 1.1 × 0.7 cm
Description

specimen with good green massive aggregates of the extremely rare chromium-pargasite in matrix from the type and only locality with original label of the author;  This mineral was originally named Ehimeite in the original description and the 2011 IMA approval of the species. It has been renamed Chromio-pargasite in the 2012 amphibole nomenclature in order to create a consistant naming convention for the pargasite group minerals.
 

Mineral Data
What's on the rock

Chromio-pargasite

Formula: 
{Na}{Ca2}{Mg4Cr3+}(Al2Si6O22)(OH)2
Strunz: 
9.DE.15
Hardness: 
6.0 - 0.0
Type Locality: 
Akaishi mine, Doi, Shikokuchuo City, Ehime Prefecture, Shikoku Island, Japan

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